Breitschwerdt · Parasites & vectors 2009 · veterinary case report · n=1

A confusing case of canine vector-borne disease: clinical signs and progression in a dog co-infected with Ehrlichia canis and Bartonella vinsonii ssp. berkhoffii.

Cited 12 times in the scientific literature.

Level 5 - mechanism / opinion, no new human data

Single veterinary case report and narrative discussion

PubMed 19426442 · doi:10.1186/1756-3305-2-S1-S3 · record verified 2026-08-31

What was done

The authors described the clinical presentation, chronic disease progression, and diagnostic process in a Labrador retriever co-infected with Ehrlichia canis and Bartonella vinsonii ssp. berkhoffii, alongside a narrative discussion of vector-borne co-infections and diagnostic challenges.

What was found

The abstract reports no numerical or quantitative metrics. It qualitatively describes a wide variety of clinical signs and chronic disease progression in the infected dog, emphasizing the difficulties in microbiological confirmation of active Bartonella infection.

Why it matters

The report illustrates how vector-borne co-infections can present with overlapping, chronic clinical manifestations that complicate microbiological confirmation and clinical diagnosis.

Limits

This is an uncontrolled single-animal case report (n = 1) lacking quantitative laboratory data in the abstract. Findings cannot be generalized to determine disease prevalence, diagnostic accuracy, or treatment efficacy.

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